US9086557B2 - Optical cable connection box with auxiliary device for gap filling and waterproofing - Google Patents

Optical cable connection box with auxiliary device for gap filling and waterproofing Download PDF

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Publication number
US9086557B2
US9086557B2 US13/807,554 US201013807554A US9086557B2 US 9086557 B2 US9086557 B2 US 9086557B2 US 201013807554 A US201013807554 A US 201013807554A US 9086557 B2 US9086557 B2 US 9086557B2
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Prior art keywords
cable
cable splice
splice shell
auxiliary device
end surface
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US13/807,554
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US20130183019A1 (en
Inventor
Chih-Kuang Hsing
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Assigned to CHI, YU-FEN reassignment CHI, YU-FEN ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HSING, CHIH-KUANG
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/4453—Cassettes
    • G02B6/4454—Cassettes with splices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/4441—Boxes
    • G02B6/4442—Cap coupling boxes
    • G02B6/4444—Seals
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/013—Sealing means for cable inlets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H02G15/115—Boxes split perpendicularly to main cable direction
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/4471—Terminating devices ; Cable clamps
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/4471—Terminating devices ; Cable clamps
    • G02B6/4476—Terminating devices ; Cable clamps with heat-shrinkable elements

Definitions

  • the cable splice enclosure can be a shell, closure, housing, or casing.
  • the present invention relates to an improved cable splice enclosure capable of using an elastic shrinkable tube for waterproof treatment when an intermediate splice or a branching splice of a cable is operated.
  • the fiber-optic cable is widely used for transmitting audio, data and video messages.
  • the fiber-optic cable transmits messages to any designated location with the assistance of a cable splice enclosure to operate a connection and a splice of the cables.
  • the cable splice enclosures are applicable not only to the linearly splice and the branching splice operation, but also necessarily applicable to an intermediately introduced branch splice operation for massive fiber-optic cables, which is an operation for further connecting some small quantity of unused cables split from a backbone cable with multi-core optical fibers in the middle portion via a cable splice enclosure to one other intermediate splice cable for connection to a new user side when a fiber-optic cable service is required for a customer.
  • the backbone fiber-optic cable especially the fiber-optic cable in use, cannot be cut off.
  • the heat-shrinkable type has some disadvantages of, for example, a necessity to use the torching when under construction, a difficulty of controlling a consistent quality, an adverse influence to water-proof effect caused by cable shaking and distortion, and a bad qualification inadequate to an underground fiber-optic cable installed in a manhole where water is accumulative all the year round although it is adequate to be used in a hanged or a wall-mounted environment.
  • the elastic shrinkable tube type is the most convenient for the construction.
  • the elastic shrinkable tube type also has the advantages of a highly consistent construction quality, an excellent water-proof effect, and a low cost of materials. Therefore, the adoption of the elastic shrinkable tube for performing the waterproof treatment to either the cables of a direct splice operation or those of a branching splice operation is the best choice for the constructor.
  • the elastic shrinkable tube is made of an elastic object having the qualities of a high elongation, a high tensile strength, and an excellent restoring rate.
  • a hard tubular plastic object having a spiral shape extractable in a stripe manner from the internal side of the elastic shrinkable tube for enlarging the inside diameter is inserted in the elastic shrinkable tube.
  • the method for waterproof treatment by using an elastic shrinkable tube is performed as follows. Firstly, put a portion of the elastic shrinkable tube with the enlarged inside diameter to cover the outer portion of the hollow cylindrical tube disposed on an end surface for a fiber-optic cable to pass therethrough, and put the other portion of the elastic shrinkable tube to cover the portion of the fiber-optic cable passing therethrough, connecting to and lying externally to the hollow cylindrical tube.
  • the inside diameter of the elastic shrinkable tube restores back to a small inside diameter originally in the situation before it was enlarged.
  • the small inside diameter is less than both the outside diameter of the hollow cylindrical tube and that of the fiber-optic cable, so that a shrinkage force in the diametrical direction is exerted on the outer portion of the hollow cylindrical tube and the portion of the fiber-optic cable lying externally to the hollow cylindrical tube, and a tight water-proof structure is formed accordingly.
  • the bending curvature of an outdoor fiber-optic cable allows 3 mm in radius, which is 6 mm in diameter. Therefore, for the diameter of a hole of the hollow cylindrical tube for passing therethrough the fiber-optic cable in a dual-cable manner, the inside diameter of the longer side is larger than 6 mm based on the requirements of the general telecommunication supplier.
  • the diameter of a general fiber-optic cable is merely 1.5 to 2 mm so that there will be a big breach between the rim of the hole and the fiber-optic cable. That is why it is not suitable to adopt an elastic shrinkable tube to perform the water-proof treatment.
  • the water-proof treatment of the elastic shrinkable tube type can only be used for the direct splice and the branching splice operations, while the water-proof treatment of the heat-shrinkable type or the mechanical type should be used for the branch splicing of an intermediately introduced connection.
  • an elastic shrinkable tube is possibly used for the waterproof treatment. If the method of cable splice operation using the cable splice enclosure and waterproof treatment is feasibly standardized, not only the quality and safety of the construction are improved, but also the manufacturing and maintenance cost of the constructor are greatly lowered.
  • a cable splice enclosure is provided.
  • the particular design in the present invention not only solves the problems described above, but also is easy to be implemented.
  • the present invention has the utility for the industry.
  • a cable splice enclosure includes at least one end surface passing therethrough a first cable, wherein the first cable has a fiber-optic core therein and is bent in a U-shape, or is oppositely bent, without breaking the fiber-optic core, and the bent first cable has an inner part in the cable splice enclosure and an outer part out of the cable splice enclosure, at least a first hollow cylindrical tube formed on the end surface and passing therethrough the bent first cable, at least an auxiliary device cooperating with the outer part of the bent first cable to form a first waterproof structure, and at least a first shrinkable tube covering an outer surface of the first hollow cylindrical tube and an outer surface of the auxiliary device to form a second waterproof structure.
  • the auxiliary device has at least one component selected from the group consisting of a cable bundling enclosure body, a fixing screw, a waterproof glue having characteristics of adhesion and plasticity, an elastomer waterproof pad and a combination thereof.
  • the cable splice enclosure further includes a second shrinkable tube covering an outer surface of the second hollow cylindrical tube and a part of the second cable passing out of the second hollow cylindrical tube to form a third waterproof structure.
  • the end surface has a first location passing therethrough a main cable.
  • the cable splice enclosure further includes therein at least a collecting disk support with a collecting disk.
  • the first location is disposed at a first linear path on which the main cable enters the cable splice enclosure without being blocked and interfered by the collecting disk. Therefore, it is possible to prevent the main cable from a necessity of being bent immediately because of a hinder by a cable collecting disk right after going into the cable splice enclosure having a small space that causes a problem of a poor transmission quality.
  • the end surface has a second location passing therethrough a third cable, and the second location is disposed at a second linear path on which the third cable enters the cable splice enclosure without being blocked and interfered by the collecting disk.
  • the cable splice enclosure further includes a second cable fixture device fixing the collecting disk support, wherein the second cable fixture device fixes the collecting disk support at a specific position corresponding to the second location.
  • the first shrinkable tube is one selected from the group consisting of an elastic shrinkable tube, a heat-shrinkable tube and a combination thereof.
  • a cable splice enclosure includes at least one end surface passing therethrough a cable bent into a first part having a U-shaped part in the cable splice enclosure and a second part having a linear part out of the cable splice enclosure, wherein the linear part of the cable has an interstice, at least a hollow tube formed on the end surface and passing therethrough the cable, at least an auxiliary device cooperating with the linear part of the cable and filling the interstice to form a first waterproof structure, at least a first shrinkable device covering an outer surface of the hollow tube and an outer surface of the auxiliary device to form a second waterproof structure, and at least a cable fixture device fixing the U-shaped part of the cable.
  • a cable splice enclosure in accordance with a further aspect of the present invention, includes an end surface separating the cable splice enclosure into an inner part and an outer part, at least a hollow tube configured on the end surface and passing therethrough a cable, at least an auxiliary device filling an interstice to form a first waterproof structure, at least a shrinkable device covering an outer surface of the hollow tube and an outer surface of the auxiliary device to form a second waterproof structure, and at least a cable fixture device being used to fix the portion of the cable in the inner part of the cable splice enclosure.
  • the cable passing through the hollow tube is arranged to extend from the outer part to the inner part through the hollow tube, leaves a portion in the inner part, and leave from the inner part through the hollow tube toward the outer part. Meanwhile, the cable has a first segment before extending into the inner part and a second segment leaving from the inner part. The first and the second segments have an interstice therebetween to which the interstice is necessary to be filled by the auxiliary device.
  • FIGS. 1(A) ⁇ 1(E) show a cable splice enclosure having an auxiliary device for filling an interstice and proofing against water according to a first embodiment of the present invention
  • FIG. 2 shows an end surface on the cable splice enclosure for a fiber-optic cable to pass therethrough according to the first embodiment of the present invention
  • FIG. 3 shows the interior of the cable splice enclosure in one view according to the first embodiment of the present invention.
  • FIG. 4 shows the interior of the cable splice enclosure in another view according to the first embodiment of the present invention.
  • FIGS. 1(A) ⁇ 1(E) show a cable splice enclosure 1 having an auxiliary device for filling an interstice and proofing against water according to a first embodiment of the present invention.
  • the cable splice enclosure 1 includes an end surface 2 for a cable to pass therethrough.
  • the end surface 2 has a hollow cylindrical tube 3 formed thereon, as shown in FIG. 1(A) .
  • the cable splice enclosure further includes an auxiliary device for filling an interstice and proofing against water, and an shrinkable tube 4 which can be an elastic shrinkable or a heat-shrinkable one. As shown in FIG.
  • the auxiliary device includes two pieces of bundling bodies 401 , fixing screws 402 , a waterproof double-faced adhesive tape 403 , and an elastomer waterproof single-faced adhesive tap 404 .
  • the two pieces of bundling bodies 401 are in a semi-cylinder shape each having a concave space for containing each of the dual cables therein respectively for tightly bundling the cables.
  • the waterproof double-faced adhesive tape 403 has characteristics of adhesion and plasticity.
  • the elastomer waterproof single-faced adhesive tap 404 could be alternatively replaced by other applicable glues.
  • a cable extends from the outer part to the inner part of the cable splice enclosure through the hollow tube, leaves a portion in the inner part thereof, and leaves from the inner part through the hollow tube toward the outer part.
  • the cable has a first segment before extending into the inner part and a second segment leaving from the inner part. Another interstice is formed between the first and the second segments.
  • an elastomer waterproof single-faced adhesive tape 404 is used to encompass the outer surface of the integrated cylindrical bundling body formed by combining the two pieces of the semi-cylindrical bundling bodies 401 . Accordingly, a first waterproof structure is formed among each of the dual cables 5 and the bundling bodies 401 , as shown in FIG. 1(C) .
  • the cable splice enclosure 1 of the present invention for slicing a cable 5 therethrough is also suitable for any kind of the cable splice method and/or a preparation for a cable splice requirement.
  • FIG. 3 shows the interior of the cable splice enclosure 1 in one view according to the first embodiment of the present invention.
  • a first cable fixture device 9 is disposed at the interior of the cable splice enclosure 1 .
  • the first cable fixture device 9 can be a fastening ring, a fastening band, a clamping joint, or a combination thereof.
  • the first cable fixture device 9 fixes the cable 8 which lies at the inner part of the cable splice enclosure 1 by using a stainless steel fastening ring 10 .
  • the cable splice enclosure having an auxiliary device for filling an interstice and proofing against water of the present invention overcomes a variety of disadvantages of the prior art, such as the insufficiency of the function, high cost, a difficulty of controlling a consistent quality and keeping the construction under a safe environment.
  • the standardization to the tools and operation method effectively improves the quality and safety of the construction and greatly lowers the manufacturing and maintenance costs of the constructor.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Cable Accessories (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
US13/807,554 2010-07-02 2010-07-02 Optical cable connection box with auxiliary device for gap filling and waterproofing Active 2031-02-05 US9086557B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2010/074946 WO2012000205A1 (zh) 2010-07-02 2010-07-02 一种具填缝防水辅助装置的光缆接线壳

Publications (2)

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US20130183019A1 US20130183019A1 (en) 2013-07-18
US9086557B2 true US9086557B2 (en) 2015-07-21

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US13/807,554 Active 2031-02-05 US9086557B2 (en) 2010-07-02 2010-07-02 Optical cable connection box with auxiliary device for gap filling and waterproofing

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US (1) US9086557B2 (ko)
EP (1) EP2589995B1 (ko)
JP (1) JP2013531817A (ko)
KR (3) KR101641884B1 (ko)
AU (1) AU2010356740B2 (ko)
BR (1) BR112012033785B1 (ko)
CA (1) CA2804183C (ko)
MX (1) MX2013000227A (ko)
MY (1) MY166843A (ko)
NZ (1) NZ605540A (ko)
PT (1) PT2589995T (ko)
RU (1) RU2586380C2 (ko)
SG (1) SG186490A1 (ko)
TR (1) TR201215809T1 (ko)
WO (1) WO2012000205A1 (ko)

Cited By (1)

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US20150355427A1 (en) * 2013-01-23 2015-12-10 Yu-Fen Chi Cable connection casing

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US11852883B2 (en) * 2012-04-03 2023-12-26 CommScope Connectivity Belgium BVBA Cable clamp and telecommunications enclosure
US9244238B2 (en) * 2012-05-25 2016-01-26 Tyco Electronics Raychem Bvba Filler rod for cable seal and method
DK2856233T3 (da) * 2012-05-25 2021-04-26 CommScope Connectivity Belgium BVBA Kabelportanordninger til telekommunikationshus
US9875824B2 (en) * 2014-12-24 2018-01-23 Yazaki Corporation Waterproofing structure, waterproofing method and wire harness
US10811862B2 (en) 2015-05-21 2020-10-20 CommScope Connectivity Belgium BVBA Sealable cable port assemblies for telecommunications enclosure
CN106253196A (zh) * 2016-08-08 2016-12-21 上海蓝科电气有限公司 一种金属防水接头
CN107045159A (zh) * 2017-06-08 2017-08-15 诺仪器（中国）有限公司 光纤熔接机用新型高效加热槽及光纤熔接机
JP2019159141A (ja) * 2018-03-14 2019-09-19 株式会社フジクラ 接続構造体及び接続構造体の製造方法

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WO2000038291A1 (en) 1998-12-22 2000-06-29 Ccs Technology, Inc. Cable system for use in hazardous environments
CN2411609Y (zh) 1999-06-09 2000-12-20 四川省新都县湖城热缩防腐绝缘材料厂 铁路信号电缆热缩套管多分歧接续盒
CN2403158Y (zh) 1999-11-09 2000-10-25 马金亮 配线电缆橡胶护套装置
CN2426647Y (zh) 2000-05-30 2001-04-11 全冠企业有限公司 缆线固定头
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Also Published As

Publication number Publication date
US20130183019A1 (en) 2013-07-18
EP2589995A1 (en) 2013-05-08
KR20130082455A (ko) 2013-07-19
KR20150104223A (ko) 2015-09-14
MX2013000227A (es) 2013-05-30
AU2010356740B2 (en) 2014-11-27
KR20140146221A (ko) 2014-12-24
TR201215809T1 (tr) 2013-11-21
RU2586380C2 (ru) 2016-06-10
KR101641884B1 (ko) 2016-07-22
RU2013104008A (ru) 2014-08-10
EP2589995B1 (en) 2020-12-16
WO2012000205A1 (zh) 2012-01-05
JP2013531817A (ja) 2013-08-08
KR101565470B1 (ko) 2015-11-04
CA2804183C (en) 2016-05-31
PT2589995T (pt) 2021-03-04
BR112012033785B1 (pt) 2020-11-17
AU2010356740A1 (en) 2013-01-24
CA2804183A1 (en) 2012-01-05
SG186490A1 (en) 2013-01-30
NZ605540A (en) 2015-02-27
BR112012033785A2 (pt) 2016-11-22
EP2589995A4 (en) 2015-04-15
MY166843A (en) 2018-07-24

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